Two-component liquid mold silicone rubber, due to its easy operation and high replication accuracy, is widely used in fields such as handicrafts and architectural decoration. Its working core revolves around the dynamic process of "mixing, cross-linking and curing". 
This material is composed of two components: A component is the base resin, containing polymethylsiloxane and other silicon oxide polymers, which determines the elasticity and toughness of the silicone rubber; B component is the curing agent, mostly organic tin compounds or platinum catalysts, responsible for triggering the curing reaction. When using, the two components need to be mixed in proportion, and the common ratios are 10:1 or 5:1. Stirring is required to ensure uniform fusion, avoiding local non-curing or performance differences due to uneven mixing. 
The mixed rubber has fluidity and can be directly poured or brushed onto the prototype mold surface. At this time, the catalyst in component B breaks the linear structure of the polymer in component A, promoting the formation of a three-dimensional network cross-linked structure, which is the curing reaction. The curing speed is significantly affected by temperature, usually taking 4-24 hours to complete at room temperature, and can be shortened to 1-2 hours by heating to 60-80℃, meeting the needs of different production rhythms. 
After curing, the silicone rubber mold has good flexibility and demolding properties, and can precisely replicate the details of the prototype. By injecting resins, gypsums, etc. into the mold, the filling materials can be cured and then demolded, repeatedly producing products consistent with the prototype. Its characteristic of being reusable dozens of times effectively reduces the cost of batch production.